The intermediaries between men of knowledge and policy-makers and executors are subject to a change of perspective as the scope of their activity increases. Their image of the decision process and of the social context becomes more inclusive and realistic. They become better informed about how the particular interests of a constituency can be integrated with a conception of the common interests of a larger coalition of interests, perhaps inclusive of the whole community. At the early stages greater contact with policy generates effective demand for policies that serve special rather than common interests. At later stages the aggregation of operational groups (who achieve distinct identities, demands and expectations) has an impact which strengthens common and inclusive interests in a configurative approach.